EP 1015900 A4 20040922 - INTEGRATED CIRCUIT TESTER HAVING MULTIPLE PERIOD GENERATORS
Title (en)
INTEGRATED CIRCUIT TESTER HAVING MULTIPLE PERIOD GENERATORS
Title (de)
INTEGRIERTER KREISLAUFTESTER MIT MULTIPLEN ZEITGENERATOREN
Title (fr)
VERIFICATEUR DE CIRCUIT INTEGRE, A GENERATEURS DE FORMES MULTIPLES
Publication
Application
Priority
- US 9817323 W 19980820
- US 91867797 A 19970821
Abstract (en)
[origin: WO9909425A1] An integrated circuit tester includes a pattern generator (22), a main and an auxiliary period generator (20(1), 20(2)), and set of tester channels (CH(1)...CH(N)), one for each terminal of an integrated circuit device under test (DUT). A test is organized into a succession of main test cycles, each divided into two or more auxiliary test cycles. The main period generator (20(1)) indicates the start of each main test cycle and the auxiliary period generator (20(2)) indicates the start of each auxiliary test cycle. Each tester channel is programmed to respond either to the main period generator or to the auxiliary period generator. At the start of each main test cycle, the pattern generator supplies data to each tester channel indicating a test activity to be carried out at the DUT terminal and indicates a time relative to a start of a test cycle at which the activity is to be carried out. Each tester channel programmed to respond to the main period generator carries out the indicated test activity once at the indicated time during the main test cycle. Each tester channel programmed to respond to the auxiliary period generator repeats the indicated test activity at the indicated time during each successive auxiliary test cycle spanned by the main test cycle.
IPC 1-7
IPC 8 full level
G01R 31/3183 (2006.01); G01R 31/319 (2006.01)
CPC (source: EP US)
G01R 31/31922 (2013.01 - EP US)
Citation (search report)
- [X] US 4849702 A 19890718 - WEST BURNELL G [US], et al
- [A] US 5592659 A 19970107 - TOYAMA AKIRA [JP], et al
- [A] US 5592496 A 19970107 - SHIMIZU MASAO [JP], et al
- See references of WO 9909425A1
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 9909425 A1 19990225; EP 1015900 A1 20000705; EP 1015900 A4 20040922; JP 2001516030 A 20010925; KR 100514335 B1 20050913; KR 20010023102 A 20010326; US 5917834 A 19990629
DOCDB simple family (application)
US 9817323 W 19980820; EP 98942174 A 19980820; JP 2000510036 A 19980820; KR 20007001724 A 20000221; US 91867797 A 19970821